Carbureter



L. S. CAMPBELL.

CARBURETER.

APPLICATION FILED sEPT.2o, 1920.

bummed @et M, 19ml.,

won-1 auf Lastra s'rur ernaar., or marcaron', andan.

tpecication of Letters Patent.

Patented met.. tt., lwll.

application lect eptember 30, 1920. aerial tto. tutta.

(@ETED lDlElll. THE PRWISIUNS F THE ACT 0F MARCH t,

T o all 'whom it may concern: y

lle it known that ll, LESLIE STUART CAMP- lmaLL, a subject of the Kingof Great Britain and llreland, residing at Brighton, in the county ofbussex, England, have invented a new'and useful Improvement inCarbureters for Internal-Combustion Engines, (for which ll have filedapplication in England June 11, 1919, Patent #154951 of which thefollowing is a specification.

rllliis invention relates to carbureters for internal combustion enginesof the type in which the liquid fuel is allowed to How over a surface ofabsorbent material over which l5 the air induced by the suction of theengine passes and it has for its objectto obtain a .'rnaximurnefficiency of the engine Wlth a miniifnum consumption of fuel. A furtherobject of this invention is to obtain simplicity of construction andtherefore economy in maufacture. Another object is to avoid the presenceof water in the fuel from interferin'g with the action of thecarbureter. A still further object of this invention is to obtain apositive control of the supply of fuel and therefore of the speed of theengine and consequently of the speed of the vehicle driven bv same.

ll attain these ends by the construction at) shown in the accompanyingdrawings in which Figure 1 is a view in sectional elevation of aconvenient embodiment of this invention. lFi 2 is a sectional viewthereof on line at o e ig. l and Eigs. 3 and 4L are views in elevationand plan partly in section showing an alternative construction.

'throughout the views similar parts are t@ marked with like letters ofreference.

Within a cylindrical chamber a is a cylindrical frame b-of a smallerdiameter than the chamber a-on the exterior of which is a jacket vofsuitable absorbent material b. t5 @n the upper part c of this frame is adistributing chamber d in the vertical wall of which are a series ofminute'holes or ports through which the fuel in said auxiliary chamberpasses on to the absorbent jacket b.

Leading into the distributing chamber al is av pipe f which is connectedto a fitment k attached to the side of the chamber a. Un this itment isa pipe h' leading to the fuel N21, lll ETAT. Il., limb.)

supply and insaid fitment is a needle valve p1. for controlhng thesupply of fuel passing lnto the distributing chamber al. A second valve/.2 Inay be fitted to the pipe It to limit the maxlmum supply of theliquid fuel. lin the bottom of the chamber a are one or more orlfices nfor the admission of air to said chamber. Un the interior face of thechamber a are arranged one or more baffle plates p arranged so as todirect the How of air over the surface of the jacket b the pre ferredform being that of a helix as ahown 1n E ig. 1.

l[ n the upper part a of the chamberI a which 1s of a reduced diameteris located the main throttle valve rlhe needle valve 'm 1s coupled withsaid throttle valve by means of a crank pin m carried by the valve mwhich engages a slot in the controlling lever m2. of said throttlevalve.

The action of the carbureter is as follows z-The liquid fuel flows bygravity into the distributing chamber d and out of said chamber throughthe small holes or ports e on to the absorbent jacket 7). in through theinlets n by the suction of the engine picks up the liquid fuel from theabsorbent jacket and forms the explosive mixture.

v lf desired the carbureter may be provided 1n the upper part of thechamber a with auxillary air inlets n controlled by sliding shields n3carried by a ring a2 mounted to slide on the upper part a of the chambera said ring being coupled vto the throttle valve by means of an arm n*mounted on the spindle of said valve and engaging a slotted recess a5formed ini the ring n2, as shown in Figs. 3 and A.

The frame may be made of any suitable construction and form, that shown,which consists of a cylinder, being a suitable and convenient one.

What ll claim is 1. A carbureter for internal combustion engines comrisin a chamber the upper part of whic is a apted to be put inoommunication with the induction pipe of the engine, an air inlet in thebottom of said chamber, a frame located within said chamber, adistributing chamber mounted on the top of said frame, an absorbentjacket on the exterior of said frame the exterior diamlib fill

The air drawn Y lltltll engines comprising achamber the upper part ofwhich is adapted to be put in communication with the induction plpe ofthe engine, an air inlet in said lower art of said chamber, a framelocated within said chamber, a distributing chamber mounted on the topof said frame, an absorbent jacket on the exterior of said frame theexterior diameter ofsaid jacketed frame being less than the in ternaldiameter of the main chamber, baille lates on the inner Wall of the mainchamber, a series of small holes or ports in the vertical wall of saiddistributing chamber,

a port in said distributing chamber which is in communication with theliquid-fuel supply, and means for controlling the amount of li uid fuelpassing into said chamber.

3. (in a carbureter for internal combustion engines the` combination ofa chamber the upper part of which is adapted to be put in communicationwith the induction pipe of the engine, air inlets in the lower part ofsaid chamber, a frame located within said-chamber, a distributingchamber mounted .on the top of said fra-me, an absorbent jacket on theexterior of said frame and said distributing chamber auxiliary airinlets in the upper part of the main chamber above the distributingchamber, means for controlling said auxiliary inlets, means ofcommunication between the distributing chamber and the absorbent jacket,a port in said distributing chamber which is in communication with theliquid fuel supply, and means for regulating the amount of liquid fuelpassing into said chamber.

4. In a carbureter for internal combustion engines the combination of achamber the upper part of which is adapted to be put in communicationwith the induction p1 of the engine, one or more aix` inlets in t elower part of said chamber, a frame located within said chamber, adistributing chamber located on the top of said frame, a plurality ofsmall holes or ports in the Vertical wall of said distributing chamber,an absorbent jacket on the exterior of said frame, helically arrangedbaiile plates on the inner wall of the main chamber, auxiliary airinlets in the main chamber above the distributing chamber, means forcontrollin said auxiliary inlets, a port in the distriguting chamberwhich is in communication with the liquid fuel supply, and a valve forvarying the area of said port.

5. In a carbureter for internal combustion engines, the combination of acylindrical chamber the upper part of which is adapted to be put incommunication with the induction pipe of the engine, an air inlet in thelower part of said chamber, a frame centrally located within saidchamber, an absorbent jacket mounted over said frame, a cylindricaldistributing chamber located on the top of said frame said frame andsaid distributing chamber being of a smaller diameter than the-mainchamber, bale lates in the main chamber located between the inner faceof the wall of said chamber and the outer face of the absorbent jacket,ports in said distributing chamber communicating with said jacket, aport in said chamber which-is in communication with the liquid fuelsupply, and .means for re' lating the amount of liquid fuel passing trough said port.

LESLIE STUART CAMPBELL.

